The CW6601 is a high efficiency synchronous step-down converter with ultra-low quiescent current of typ. 120nA. The device is optimized to operate with a 2.2μH inductor and 10μF output capacitor and its typical switching frequency is 1.0MHz. It provides high efficiency at light load down to 10μA.

The CW6601 input voltage range is from 2.5V to 5.5V and it has eight programmable output voltage from 1.2V to 3.3V while delivering output current up to 300mA.

The device is available in a tiny lead-free 0.4mm pitch, 1.575mmx0.825mm, WLCSP-8 package.